This puzzle:

Andrea Carla Michaels notes: I liked coming up with different phrases around EVIL.
QUEENOFMEAN and SIDVICIOUS led me to wanting them all to be people,
but it was not to be.

Fretted that SOMETHINGWICKED 15 was but a partial of the full
Bradbury title of SOMETHINGWICKED this way comes, but finally went
with it, because the book is often referred to as SOMETHINGWICKED and it
perfectly summed up the theme. Now don't be cruel...